<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Angular JS Validation</title>
    <script src="js/angular.min.js"></script>
</head>
<body>
<h2>Validation Example</h2>
<form ng-app="myApp" ng-controller="validateCtrl" name="myForm" novalidate>
    <p>用户名:<br>
        <input type="text" name="user" ng-model="user" required>
        <span style="color: red" ng-show="myForm.user.$dirty && myForm.user.$invalid">
            <span ng-show="myForm.user.$error.required">用户名是必须的</span>
        </span>
    </p>

    <p>邮箱:<br>
        <input type="email" name="email", ng-model="email" required>
        <span style="color: red" ng-show="myForm.email.$dirty && myForm.email.$invalid">
            <span ng-show="myForm.email.$error.email">非法的邮箱地址</span>
            <span ng-show="myForm.email.$error.required">邮箱是必须的</span>
        </span>

    </p>

    <p>
        <input type="submit"
               ng-disabled="myForm.user.$dirty && myForm.user.$invalid ||
myForm.email.$dirty && myForm.email.$invalid">
    </p>
</form>
<script>
    var app = angular.module('myApp', []);
    app.controller('validateCtrl', function ($scope) {
        $scope.user = 'John Doe';
        $scope.email = 'john.doe@gmail.com'
    })
</script>
</body>
</html>